SCR (Selective Catalytic Reduction) denitration reactor
By designing a support frame and adjusting the rod hanging system in the SCR denitrification reactor, we ensure that there is a gap between the catalyst module and the support frame, and the flue gas can fully contact the catalyst, which solves the problem of low catalyst utilization in the prior art and improves the smoke Gas treatment effect.
Patent Information
- Application Number
- CN202411331654.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2024-12-31
AI Technical Summary
In existing SCR denitrification reactors, the flue gas cannot fully contact the catalyst module, resulting in low catalyst utilization and poor flue gas treatment effect.
A SCR denitrification reactor including a shell, rectifier grille, support frame and catalyst module is designed. The catalyst module is hoisted under the support frame, and the flexible arrangement and height adjustment of the catalyst module is achieved by adjusting the hanging rod and slide rail system. Ensure that the flue gas is in full contact with the catalyst.
The utilization rate of the catalyst and the flue gas treatment effect are improved, ensuring that the flue gas can evenly contact the catalyst module, and the efficiency of the denitrification reaction is improved.
Smart Images
Figure CN119215653A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of denitration, and in particular to an SCR denitration reactor. Background Art
[0002] The existing SCR denitrification reactor includes a shell, a rectifying grid, a catalyst module, and a grid and a beam supporting the catalyst module. After the flue gas enters the shell from the air inlet of the shell, it passes through the rectifying grid and the catalyst module in sequence. Since the catalyst module is mounted on the grid and the beam, when the flue gas passes through the catalyst module, part of the grid and the beam will block the area of part of the catalyst module, resulting in the flue gas being unable to fully contact the catalyst module, low catalyst utilization, and poor flue gas treatment effect.
[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention
[0004] In view of the deficiencies in the prior art, an embodiment of the present invention discloses an SCR denitration reactor, which solves the problems that the flue gas cannot fully contact the catalyst module, the catalyst utilization rate is low, and the flue gas treatment effect is poor.
[0005] The technical solution adopted by the present invention is as follows:
[0006] The SCR denitration reactor comprises a shell, a rectifying grid, a support frame and a catalyst module. The shell has an air inlet at the upper end and an air outlet at the lower end, and flue gas circulates inside. The rectifying grid is arranged inside the shell and located at the lower end of the air inlet. The support frame is arranged inside the shell and located at the lower end of the rectifying grid. The catalyst module is hoisted at the lower end of the support frame so that there is a gap between the catalyst module and the support frame.
[0007] A further technical solution is that the SCR denitration reactor also includes a plurality of adjusting hanging rods, the top ends of the adjusting hanging rods are connected to the bottom ends of the support frame, and the bottom ends of the adjusting hanging rods are connected to the catalyst module.
[0008] A further technical solution is that a hook is provided at the bottom of the adjusting hanging rod, a hanging piece is provided at the top of the side of the catalyst module, a hole is opened at the top of the hanging piece, and the hook passes through the hole to hook the hanging piece.
[0009] Its further technical solution is that the support frame is also provided with a slide rail, and the slide rail includes a first horizontal part connected to the bottom of the support frame, a vertical part connected to the lower end of the first horizontal part, and a second horizontal part connected to the lower end of the vertical part. A slider is provided at the top of the adjustment hanging rod, and a slot is opened at the upper end of the slider. The shape of the slot matches the second horizontal part, and the slider can slide in the direction in which the slide rail extends.
[0010] A further technical solution is that a first stud is provided at the top end of the hook, a first screw hole is provided at the bottom end of the adjustment rod, and the upper end of the hook is threadedly connected to the bottom end of the adjustment rod.
[0011] A further technical solution is that a second stud is provided at the bottom end of the slider, a second screw hole is provided at the top end of the adjustment rod, and the bottom end of the slider is threadedly connected to the top end of the adjustment rod.
[0012] A further technical solution is that the adjustment hanging rod includes two connecting parts and two connecting rods, the two connecting rods are symmetrically connected to the two sides of the two connecting parts, and a screw hole is opened through the center of the connecting part.
[0013] A further technical solution is that the rectifying grid is also provided with a plurality of swirl blades, the swirl blades are spiral-shaped, and the top ends of the plurality of swirl blades are connected to the lower ends of the bars of the rectifying grid with lateral and longitudinal intervals.
[0014] A further technical solution is that there are a plurality of catalyst modules, and the plurality of catalyst modules are arranged in an array and hoisted at the lower end of the support frame.
[0015] A further technical solution is that the hanging pieces are provided at the tops of the four side surfaces of the catalyst module, and the two hooks hook the hanging pieces on both sides of the catalyst module.
[0016] The beneficial effects of the embodiments of the present invention are as follows:
[0017] 1. The SCR denitration reactor of the present invention comprises a shell, a rectifying grid, a support frame, an adjusting hanging rod and a catalyst module. The catalyst module is hoisted on the adjusting hanging rod. The flue gas passes through the rectifying grid and the support frame. Since there is a gap between the support frame and the catalyst module, the flue gas can fully contact the catalyst module, thereby improving the utilization rate of the catalyst and the flue gas treatment effect.
[0018] 2. Furthermore, the adjustment hanging rod includes two connecting parts and two connecting rods, the two connecting rods are symmetrically connected to both sides of the two connecting parts, the first screw hole and the second screw hole are opened through the center of the connecting part, the thread directions of the first screw hole and the second screw hole are opposite, a first stud is provided at the top of the hook, and a second stud is provided at the bottom of the slider. By rotating the connecting rod and the connecting part, thread displacement is generated, so that the first stud and the second stud are moved closer to or away from each other to adjust the height of the catalyst module, and the height difference between each catalyst module is controlled within ≤2mm.
[0019] 3. Furthermore, a slide rail is provided at the bottom of the support frame, the cross-section of the slide rail is I-shaped, protrusions are provided on both sides of the bottom of the slide rail, a slider is provided at the top of the adjustment hanging rod, a slot is provided at the lower end of the slider, the shape of the slot matches the slide rail, and the slider can slide in the direction in which the slide rail extends, so that the catalyst module can be flexibly arranged longitudinally and transversely, which is convenient for installing and replacing the catalyst module. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a simplified cross-sectional structural schematic diagram of the SCR denitration reactor of the present invention.
[0021] Figure 2 It is a schematic diagram of the support frame hoisting structure of the SCR denitration reactor of the present invention.
[0022] Figure 3 for Figure 2 Enlarged view at A.
[0023] Figure 4 It is a schematic diagram of the regulating hanging rod structure of the SCR denitration reactor of the present invention.
[0024] Figure 5 It is a schematic diagram of the arrangement of catalyst modules of the SCR denitration reactor of the present invention.
[0025] Figure 6 It is a schematic diagram of the rectifying grid structure of the SCR denitration reactor of the present invention.
[0026] In the figure:
[0027] 1. Shell; 2. Rectifier grid; 3. Support frame; 4. Catalyst module; 41. Hanging plate; 5. Air inlet; 6. Air outlet; 7. Adjustment hanging rod; 71. Hook; 72. Slider; 73. Notch; 74. First stud; 75. First screw hole; 76. Second stud; 77. Second screw hole; 78. Connecting part; 79. Connecting rod; 8. Slide rail; 81. First horizontal part; 82. Vertical part; 83. Second horizontal part; 9. Swirl plate. DETAILED DESCRIPTION
[0028] The specific implementation of the present invention is described below in conjunction with the accompanying drawings.
[0029] In order to make the purpose, technical scheme and advantages of the present invention clearer, the device proposed by the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated by the accompanying drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the present invention can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the present invention.
[0030] Example:
[0031] SCR denitrification reactor, SCR is selective catalytic reduction technology. Figure 1 It is a simplified cross-sectional structural schematic diagram of the SCR denitration reactor of the present invention. Figure 2 It is a schematic diagram of the support frame hoisting structure of the SCR denitration reactor of the present invention. Figure 5 Schematic diagram of the catalyst module arrangement of the SCR denitration reactor of the present invention. Figure 1 , Figure 2 and Figure 5 As shown, the SCR denitration reactor includes a shell 1, a rectifying grid 2, a support frame 3 and a catalyst module 4. The shell 1 has an air inlet 5 at the upper end and an air outlet 6 at the lower end. Flue gas flows inside the shell 1. The rectifying grid 2 is arranged inside the shell 1. The rectifying grid 2 is located at the lower end of the air inlet 5. The support frame 3 is arranged inside the shell 1. The support frame 3 is located at the lower end of the rectifying grid 2. The catalyst module 4 is hoisted at the lower end of the support frame 3, so that there is a gap between the catalyst module 4 and the support frame 3. Exemplarily, there are a plurality of catalyst modules 4, and the plurality of catalyst modules 4 are arranged in an array and hoisted at the lower end of the support frame 3.
[0032] Figure 4 Schematic diagram of the regulating rod structure of the SCR denitration reactor of the present invention. Figures 4-5 As shown, the SCR denitration reactor further includes a plurality of adjusting hanging rods 7, the top of which is connected to the bottom of the support frame 3, and the bottom of which is connected to the catalyst module 4. Specifically, a hook 71 is provided at the bottom of the adjusting hanging rod 7, and a hanging piece 41 is provided at the top of the side of the catalyst module 4. A hole is provided at the top of the hanging piece 41, and the hook 71 passes through the hole to hook the hanging piece 41. Exemplarily, hanging pieces 41 are provided at the top of the four sides of the catalyst module 4, and two hooks 71 hook the hanging pieces 41 on both sides of the catalyst module 4.
[0033] Figure 3 for Figure 2 A magnified view of point A. Figure 3 As shown, further, the support frame 3 is also provided with a slide rail 8, which includes a first horizontal portion 81 connected to the bottom of the support frame 3, a vertical portion 82 connected to the lower end of the first horizontal portion 81, and a second horizontal portion 83 connected to the lower end of the vertical portion 82. A slider 72 is provided at the top of the adjustment hanging rod 7, and a slot 73 is provided at the upper end of the slider 72. The shape of the slot 73 matches the second horizontal portion 83. The slider 72 can slide in the direction in which the slide rail 8 extends. The slider 72 can realize flexible arrangement of the catalyst module 4 in the longitudinal and transverse directions, which is convenient for installing and replacing the catalyst module 4.
[0034] Figure 6 Schematic diagram of the rectifying grid structure of the SCR denitration reactor of the present invention. Figure 6 As shown, further, the rectifying grid 2 is also provided with a plurality of swirl blades 9, which are spiral-shaped, and the top ends of the plurality of swirl blades 9 are connected to the lower ends of the bars of the rectifying grid 2 at lateral and longitudinal intervals, which can make the passing smoke swirl, consolidate the balanced stability of the flow state, and reduce the possibility of clogging the channel.
[0035] When this embodiment is working:
[0036] The flue gas is introduced into the air inlet 5, and the flue gas passes through the rectifying grid 2 and the swirl sheet 9, so that the flue gas generates a swirl flow, thereby consolidating the balanced stability of the flow state. After the swirling flue gas passes through the support frame 3, due to the gap between the catalyst module 4 and the support frame 3, the swirling flue gas fully contacts several catalyst modules 4 for denitrification treatment, and the exhaust gas after denitrification is discharged from the air outlet 6.
[0037] Second embodiment:
[0038] Based on the first embodiment, the second embodiment further optimizes and refines the adjustment hanging rod 7 of the first embodiment.
[0039] like Figure 4 As shown, a first stud 74 is provided at the top of the hook 71 , a first screw hole 75 is provided at the bottom of the adjustment rod 7 , and the upper end of the hook 71 is threadedly connected to the bottom end of the adjustment rod 7 .
[0040] like Figure 4 As shown, further, a second stud 76 is provided at the bottom end of the slider 72, a second screw hole 77 is opened at the top end of the adjustment hanging rod 7, and the bottom end of the slider 72 is threadedly connected with the top end of the adjustment hanging rod 7.
[0041] like Figure 4As shown, further, the adjustment rod 7 includes two connecting parts 78 and two connecting rods 79, the two connecting rods 79 are symmetrically connected to the two sides of the two connecting parts 78, the first screw hole 75 is opened through the center of the lower end connecting part 78, and the second screw hole 77 is opened through the center of the upper end connecting part 78. The first screw hole 75 and the second screw hole 77 have opposite thread directions. The height of the catalyst module 4 can be adjusted by rotating the two connecting rods 79 and the two connecting parts 78 to generate thread displacement, and the height difference between each catalyst module 4 is controlled within ≤2mm. Of course, in other embodiments of the present invention, the adjustment rod 7 can also be a solid cylinder, as long as its two ends can be threadedly connected to the first stud 74 and the second stud 76, and the present invention does not make further restrictions on this.
[0042] By rotating the two connecting rods 79 and the two connecting parts 78, since the first screw hole 75 and the second screw hole 77 have opposite thread directions, the screw holes and the studs produce thread displacement, so that the first stud 74 and the second stud 76 are close to or away from each other, so that the catalyst module 4 is in the same plane, and the flue gas is evenly contacted with the catalyst module 4, thereby improving work efficiency. The adjustment hanging rod 7 is made into a hollow shape by the two connecting parts 78 and the two connecting rods 79, which is lower in quality than a solid column and reduces costs.
[0043] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0044] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.
Claims
1. SCR denitration reactor, characterized in that: include: A shell (1), wherein the shell (1) has an air inlet (5) at the upper end and an air outlet (6) at the lower end, and smoke circulates inside; a rectifying grid (2), the rectifying grid (2) being arranged inside the shell (1) and located at the lower end of the air inlet (5); A support frame (3), the support frame (3) being arranged inside the shell (1), and the support frame (3) being located at the lower end of the rectifying grid (2); A catalyst module (4), wherein the catalyst module (4) is hoisted at the lower end of the support frame (3) so that a gap exists between the catalyst module (4) and the support frame (3).
2. The SCR denitration reactor according to claim 1, characterized in that: The SCR denitration reactor also includes a plurality of adjusting hanging rods (7), the top ends of the adjusting hanging rods (7) being connected to the bottom ends of the support frames (3), and the bottom ends of the adjusting hanging rods (7) being connected to the catalyst modules (4).
3. The SCR denitration reactor according to claim 2, characterized in that: A hook (71) is provided at the bottom end of the adjusting hanging rod (7), a hanging piece (41) is provided at the top end of the side of the catalyst module (4), a hole is provided at the top end of the hanging piece (41), and the hook (71) passes through the hole and hooks the hanging piece (41).
4. The SCR denitration reactor according to claim 2, characterized in that: The support frame (3) is also provided with a slide rail (8), and the slide rail (8) includes a first transverse portion (81) connected to the bottom of the support frame (3), a vertical portion (82) connected to the lower end of the first transverse portion (81), and a second transverse portion (83) connected to the lower end of the vertical portion (82). The top end of the adjustment hanging rod (7) is provided with a slider (72), and the upper end of the slider (72) is provided with a notch (73), and the shape of the notch (73) matches the second transverse portion (83), and the slider (72) can slide in the direction in which the slide rail (8) extends.
5. The SCR denitration reactor according to claim 3, characterized in that: The top end of the hook (71) is provided with a first screw thread (74), the bottom end of the adjustment rod (7) is provided with a first screw hole (75), and the upper end of the hook (71) is threadedly connected to the bottom end of the adjustment rod (7).
6. The SCR denitration reactor according to claim 4, characterized in that: A second screw (76) is provided at the bottom end of the slider (72), a second screw hole (77) is provided at the top end of the adjustment hanging rod (7), and the bottom end of the slider (72) is threadedly connected to the top end of the adjustment hanging rod (7).
7. The SCR denitration reactor according to claim 5 or 6, characterized in that: The adjustment hanging rod (7) comprises two connecting parts (78) and two connecting rods (79), the two connecting rods (79) are symmetrically connected to the two sides of the two connecting parts (78), and a screw hole is opened through the center of the connecting part (78).
8. The SCR denitration reactor according to claim 1, characterized in that: The rectifying grid (2) is also provided with a plurality of swirl sheets (9), the swirl sheets (9) are spiral-shaped, and the top ends of the plurality of swirl sheets (9) are connected to the lower ends of the bars of the rectifying grid (2) at intervals in the horizontal direction and in the vertical direction.
9. The SCR denitration reactor according to claim 1, characterized in that: The catalyst modules (4) are in a plurality, and the catalyst modules (4) are arranged in an array and hoisted at the lower end of the support frame (3).
10. The SCR denitration reactor according to claim 3, characterized in that: The hanging pieces (41) are provided at the top ends of the four sides of the catalyst module (4), and the two hooks (71) hook the hanging pieces (41) on both sides of the catalyst module (4).